Unstable angina: status of aspirin and other forms of therapy.
A randomized, double-blind clinical trial in 1266 men with unstable angina showed that 324 mg of aspirin daily for 12 weeks reduced the incidence of myocardial infarction by 51% (p = .001), and the data suggested a similar reduction in mortality. The only other therapy for unstable angina that has been studied in randomized trials of adequate size to evaluate mortality and rate of infarction is aortocoronary bypass surgery. Results with heparin therapy have been encouraging, but the studies in which this drug has been tested have been flawed. Nitrates, beta-blockers, calcium blockers, fibrinolytic therapy, and coronary angioplasty have not been adequately evaluated. Randomized trials of aortocoronary bypass surgery have not demonstrated decreased mortality or rates of myocardial infarction in patients with unstable angina. Although surgical techniques have improved since these trials were conducted, medical management has also improved. Mortality and infarct rate in patients with unstable angina are now lower than in the early 1970s. New well-controlled clinical trials are needed.[1]References
- Unstable angina: status of aspirin and other forms of therapy. Lewis, H.D. Circulation (1985) [Pubmed]
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